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Bank Loan and Lines of Credit - Additional Information (Detail) - USD ($)
 3 Months Ended
Oct. 03, 2018
Mar. 03, 2017
Mar. 31, 2019
Apr. 17, 2019
Dec. 31, 2018
Sep. 21, 2018
Sep. 05, 2018
Sep. 01, 2018
Jun. 29, 2018
Jun. 14, 2018
Oct. 09, 2017
Dec. 31, 2010
Debt Instrument, Interest Rate, Stated Percentage     6.50%                  
Line of Credit Facility, Maximum Borrowing Capacity $ 6,600,000 $ 6,700,000                    
Line of Credit Facility, Description The letter of credit expires on December 31, 2019 and is deemed automatically extended without amendment for additional one - year periods from the present or any future expiration date, unless notified by the institution to terminate prior to 90 days from any expiration date. The letter of credit expired on December 31, 2018 and was deemed automatically extended without amendment for additional one - year periods from the present or any future expiration date, unless notified by the institution to terminate prior to 90 days from any expiration date.                    
ICC [Member]                        
Debt Instrument, Face Amount                       $ 4,600,000
Debt Instrument, Interest Rate, Stated Percentage         5.50%              
ICC [Member] | Standby Letters of Credit [Member]                        
Debt Instrument, Maturity Date     Dec. 31, 2018                  
APC [Member]                        
Long-term Line of Credit           $ 5,000,000         $ 5,000  
APC [Member] | Standby Letters of Credit [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity     $ 300,000                  
NMM Business Loan Agreement [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity                   $ 20,000,000    
Line of Credit Facility, Interest Rate at Period End     5.625%   5.625%              
Line of Credit Facility, Expiration Date     Jun. 22, 2020                  
Long-term Line of Credit     $ 13,000,000   $ 13,000,000 $ 5,000,000         $ 5,000,000  
Line of Credit Facility, Remaining Borrowing Capacity         $ 700,000       $ 700,000      
Line of Credit Facility, Description     prime rate plus 0.125%                  
Line of Credit Facility, Guarantee Given by Related Parties     $ 5                  
NMM Business Loan Agreement [Member] | Minimum [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity               $ 20,000,000        
NMM Business Loan Agreement [Member] | Maximum [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity               $ 27,000,000        
APC Business Loan Agreement [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity                   $ 10,000,000    
Line of Credit Facility, Interest Rate at Period End     5.625%   5.625%              
Line of Credit Facility, Expiration Date     Jun. 22, 2020                  
Line of Credit Facility, Remaining Borrowing Capacity     $ 9,700,000   $ 9,700,000              
Line of Credit Facility, Description     prime rate plus 0.125%                  
APC Business Loan Agreement [Member] | Subsequent Event [Member] | Minimum [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity       $ 10,000,000                
APC Business Loan Agreement [Member] | Subsequent Event [Member] | Maximum [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity       40,000,000                
APAACO [Member] | Standby Letters of Credit [Member]                        
Line of Credit Facility, Expiration Date     Dec. 31, 2018                  
Net work Medical Management [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity             $ 20,000,000          
Line of Credit Facility, Interest Rate at Period End     5.625%   5.625%              
Line of Credit Facility, Expiration Date     Sep. 05, 2019                  
Line of Credit Facility, Remaining Borrowing Capacity         $ 20,000,000              
Line of Credit Facility, Description     prime rate plus 0.125%                  
Net work Medical Management [Member] | Subsequent Event [Member] | Minimum [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity       16,000,000                
Net work Medical Management [Member] | Subsequent Event [Member] | Maximum [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity       $ 20,000,000